Why are Calvin cycle reactions also referred to as the dark reactions?
A) They occur primarily at night.
B) They absorb, and do not reflect, the sunlight energy.
C) They do not absorb sunlight energy.
D) They do not require sunlight energy.

Question

Quizplus · Accepted Answer

The Calvin cycle reactions do not absorb sunlight energy. They use the energy stored in ATP and NADPH, which are produced during the light reactions, to convert carbon dioxide into glucose.

Why Are Calvin Cycle Reactions Also Referred to as the Dark